body {
    /* background: #f2f2f2; */
    background: #282c34;
}

.frame {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 400px;
    height: 400px;
    margin-top: -200px;
    margin-left: -200px;
    border-radius: 2px;
    box-shadow: 1px 2px 10px 0px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    background: #de4738;
    color: #fff;
    font-family: 'Open Sans', Helvetica, sans-serif;
}

.pixel {
    float: left;

    input {
        display: none;
    }

    label {
        box-sizing: border-box;
        display: block;
        width: 20px;
        height: 20px;
        border: 1px solid #e24e3f;
        cursor: pointer;

        &:hover {
            background: #ec5142;
            border-color: #e24e3f;
        }
    }

    input:checked ~ label {
        background: #fff;
        border-color: #fff;
    }
}
